Telescopic canning sleeve set for forming voids in concrete slab



FIG. 1 is a perspective view of the separated components of the telescopic canning sleeve set for forming voids in concrete slabs.

FIG. 2 is a front view showing the separated components of the telescopic canning sleeve set for forming voids in concrete slabs; and,

FIG. 3 is a side view showing the components of the telescopic canning sleeve set, for forming voids in concrete slabs engaged together. 

CLAIM The ornamental design for a telescopic canning sleeve set for forming voids in concrete slabs, as shown and described. 